Processors

On Solaris and Windows, Web Server transparently takes advantage of
multiple CPUs. In general, the effectiveness of multiple CPUs varies with
the operating system and the workload. Dynamic content performance improves
as more processors are added to the system. Because static content involves
mostly IO, and more primary memory means more caching of the content (assuming
the server is tuned to take advantage of the memory), more time is spent in
IO rather than CPU activity.